JP2000102787A - Electrolytic cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct highly efficient electrolysis in an electrolytic cell by applying a low voltage. SOLUTION: The anode plate 12 and cathode plate 13 having many through- holes 12a and 13a are opposed to each other in the electrolytic cell 10 and close to a diaphragm 14 dividing the inside of a cell main body 11 into an anode compartment R1 and a cathode compartment R2. Water to be electrolyzed is supplied to the anode compartment R1 and cathode compartment R2. In this case, a spacer 15 for formed with a nonconductive material and capable of holding bubbles at a specified site S is interposed between the diaphragm 14 and anode plate 12 or between the diaphragm 14 and cathode plate 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic cell for generating electrolyzed water by electrolyzing water to be electrolyzed (tap water, groundwater, dilute salt water, etc.).

[0002]

2. Description of the Related Art As one of electrolytic baths, a positive electrode plate and a negative electrode plate having a large number of through holes are arranged opposite to each other in proximity to a diaphragm which divides the inside of the cell body into an anode chamber and a cathode chamber, Further, there is an apparatus in which water to be electrolyzed is supplied to the anode chamber and the cathode chamber.
No. in the official gazette.

[0003]

By the way, in the electrolytic cell described in the above-mentioned publication, since current is supplied to the entire opposing surfaces of the positive electrode plate and the negative electrode plate, it is necessary to sufficiently increase the current density. And electrolysis of the electrolyzed water may not be performed efficiently.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to address the above-described problems, and has a number of through holes having a large number of through-holes close to a diaphragm that partitions the inside of a tank body into an anode chamber and a cathode chamber. In an electrolytic cell in which an electrode plate and a negative electrode plate are arranged facing each other, and water to be electrolyzed is supplied to the anode chamber and the cathode chamber, the diaphragm and the positive electrode plate and the diaphragm are provided. At least one between the cathode electrode plate and the negative electrode plate is made of a non-conductive material, and a spacer capable of holding air bubbles is interposed at a predetermined portion. In this case,
It is desirable that the non-conductive material of the spacer is made of a material having cushioning and vibration damping properties, or a woven mesh having a predetermined mesh.

[0005]

In the electrolytic cell according to the present invention, when a voltage is applied between the positive electrode plate and the negative electrode plate in a state where the water to be electrolyzed is supplied to the anode chamber and the cathode chamber, the current is applied. In the initial stage of energization, the water to be electrolyzed is electrolyzed by the current flowing between the peripheral surfaces of the through-holes facing the positive electrode plate and the negative electrode plate and the current flowing between the opposing surfaces of the positive electrode plate and the negative electrode plate to generate electrolytic water. As a result, air bubbles are generated, and some of the air bubbles are sequentially retained and held at predetermined portions of the spacer. Therefore, in the subsequent energization, the energization on the opposing surfaces of the positive electrode plate and the negative electrode plate can be suppressed by air bubbles (which are non-conductive) held by the spacers. Electricity with a high current density can be conducted between the peripheral surfaces of the through-holes of the plate, whereby highly efficient electrolysis can be performed by applying a low voltage.

When a material having cushioning and vibration damping properties is adopted as the non-conductive material of the spacer,
Even in a configuration in which the positive electrode plate and the negative electrode plate are pressed against the diaphragm and the spacer, damage to the diaphragm can be accurately prevented by the cushioning action of the spacer. Also, even if the diaphragm vibrates due to the fluctuation of the pressure of the electrolyzed water supplied and supplied,
The vibration of the diaphragm is suppressed by the damping action of the spacer,
Since the engagement and contact of the diaphragm with the electrode plate or the spacer are suppressed, damage to the diaphragm can be prevented. In addition, when the spacer is formed of a woven mesh of a predetermined mesh, the effect that it can be implemented at low cost can be expected, and the woven mesh can also provide cushioning and vibration damping properties. can get.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an electrolytic cell 10 according to the present invention. The electrolytic cell 10 is disposed so as to be opposed to a tank main body 11 into which water to be electrolyzed is supplied and which is close to the inside of the tank main body 11. A diaphragm 14 for partitioning the positive electrode plate 12 and the negative electrode plate 13 and an anode chamber R1 in which the positive electrode plate 12 is accommodated and a cathode chamber R2 in which the negative electrode plate 13 is accommodated in the tank body 11
And a spacer 15 interposed between the diaphragm 14 and the negative electrode plate 13
It has.

The tank body 11 has a supply port 11a opening toward the anode chamber R1 and a supply port 11b opening toward the cathode chamber R2 at its lower part, and a discharge port 11c opening toward the anode chamber R1. And a discharge port 11d that opens toward the cathode chamber R2.

The positive electrode plate 12 and the negative electrode plate 13 have a large number of through holes (diameter of about 4.5 mm, pitch between hole centers of 5 to 6 m).
m) (a punching plate coated with platinum) having platinum 12a and 13a, the positive electrode plate 12 is connected to the anode terminal of the DC power supply 20, and the negative electrode plate 13 is connected to the DC power supply. It is connected to the cathode terminal of the device 20. The diaphragm 14 is an ion-permeable membrane having a diaphragm function of dividing the inside of the tank body 11 into an anode chamber R1 and a cathode chamber R2, and is sandwiched between the positive electrode plate 12 and the negative electrode plate 13 together with the spacer 15. It is arranged.

The spacer 15 is made of a non-conductive material (for example,
It is a woven mesh body of a predetermined mesh (about 18 mesh) made of polyethylene or the like, has a cushioning property and a vibration damping property in the left-right direction in the figure, and has both electrode plates 12 and 1.
The bubbles generated by the electrolysis of the electrolyzed water can be held in a predetermined portion S between the three, that is, a portion corresponding to the opposing surfaces of the two electrode plates 12 and 13.

In the electrolytic cell 10 of the present embodiment configured as described above, a voltage is applied between the two electrode plates 12 and 13 in a state where the electrolyzed water is supplied to the anode chamber R1 and the cathode chamber R2. When a current is passed between the peripheral surfaces (cylindrical surfaces forming the through holes) of the opposed through holes 12a and 13a of the two electrode plates 12 and 13 in the initial stage of the current application, the current flowing through the two electrode plates 1
The electrolysis water is electrolyzed by the current flowing between the opposing surfaces 2 and 13 (the planes opposing each other in the left-right direction in FIG. 1) to generate electrolyzed water and generate bubbles. Fifteen predetermined portions S are sequentially retained and retained in the weave. Note that bubbles generated at a portion corresponding to the through-hole 13a are discharged to the back surface of the negative electrode plate 13 through the through-hole 13a, and then discharged toward the outlet 11d by water flowing on the back surface of the negative electrode plate 13, Finally, it is discharged out of the electrolytic cell 10 through the discharge port 11d.

Therefore, in the subsequent energization, the energization on the opposing surfaces of the two electrode plates 12 and 13 can be suppressed by the air bubbles (non-conductive) held by the spacers 15, and mainly the two electrode plates 12, 13 through holes 12
A current with a high current density can be conducted between the peripheral surfaces of the a and 13a, and thus, high-efficiency electrolysis can be performed by applying a low voltage.

In the present embodiment, the spacer 1
5 is made of a non-conductive material into a woven mesh of a predetermined mesh to have cushioning and vibration damping properties.
Despite the configuration in which the spacer 5 is pressed and held, the spacer 1
Due to the cushioning action of 5, the diaphragm 14 can be prevented from being damaged. Further, even if the diaphragm 14 vibrates due to the fluctuation of the pressure of the electrolyzed water supplied and supplied, the vibration of the diaphragm 14 is suppressed by the damping action of the spacer 15, and the diaphragm 1
Since the engagement and contact of the fourth electrode 4 with the positive electrode plate 12 or the spacer 15 are suppressed, damage to the diaphragm 14 can be prevented.

In the above-described embodiment, the present invention is implemented with the spacer 15 interposed only between the diaphragm 14 and the negative electrode plate 13, but the spacer 15 is similarly interposed only between the diaphragm 14 and the positive electrode plate 12. The present invention can be implemented by mounting the spacer 15 not only between the diaphragm 14 and the negative electrode plate 13 but also between the diaphragm 14 and the positive electrode plate 12. It is.

In the above-described embodiment, the present invention is implemented by using a spacer 15 which is made of a non-conductive material such as polyethylene and has a predetermined mesh and is inexpensive. Any structure may be used as long as it is made of a non-conductive material and can hold bubbles at a predetermined site, and the structure thereof can be changed as appropriate.

[Brief description of the drawings]

FIG. 1 is a sectional view schematically showing an embodiment of an electrolytic cell according to the present invention.

[Explanation of symbols]

10 electrolytic cell, 11 cell body, 12 positive electrode plate, 12a
... through-hole, 13 ... cathode electrode plate, 13a ... through-hole, 14 ... diaphragm, 15 ... spacer, R1 ... anode room, R2 ... cathode room, S
... predetermined site.

Claims (3)

[Claims] 1. A positive electrode plate and a negative electrode plate each having a large number of through holes are opposed to each other in close proximity to a diaphragm that divides the inside of a tank body into an anode chamber and a cathode chamber. In an electrolytic cell in which water to be electrolyzed is supplied to a chamber, at least one of the diaphragm and the positive electrode plate and / or the diaphragm and the negative electrode plate is formed of a nonconductive material and has a predetermined portion. An electrolytic cell characterized in that a spacer capable of holding air bubbles is interposed in the cell. 2. The electrolytic cell according to claim 1, wherein a material having a cushioning property and a vibration damping property is adopted as a non-conductive material of said spacer. 3. The electrolytic cell according to claim 1, wherein the spacer is formed of a woven mesh having a predetermined mesh.